Cannot get unfetched attribute on Report export

Hi, I am using 6.10.3 and am having a very similar problem. When I attempt to export any report, it fails with the following error:

Caused by: java.lang.IllegalStateException: Cannot get unfetched attribute [code] from detached object com.haulmont.reports.entity.ReportGroup-4e083530-0b9c-11e1-9b41-6bdaa41bff94 [detached].

Thank you for reporting the problem: Unfetched attribute when export report from entity inspector · Issue #125 · cuba-platform/reports · GitHub. We’ll fix it in the next release 6.10.*.

Thank you for the fix in 6.10.4. It works for me.